--- /dev/null
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2009 Lennart Poettering
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 of the License,
+ or (at your option) any later version.
+
+ PulseAudio is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#include <pulse/xmalloc.h>
+#include <pulse/volume.h>
+#include <pulse/timeval.h>
+#include <pulse/util.h>
+
+#include <pulsecore/core-error.h>
+#include <pulsecore/module.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-subscribe.h>
+#include <pulsecore/sink-input.h>
+#include <pulsecore/source-output.h>
+#include <pulsecore/namereg.h>
+#include <pulsecore/protocol-native.h>
+#include <pulsecore/pstream.h>
+#include <pulsecore/pstream-util.h>
+#include <pulsecore/database.h>
+
+#include "module-stream-restore-symdef.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering");
+PA_MODULE_DESCRIPTION("Automatically set device of streams based of intended roles of devices");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(TRUE);
+PA_MODULE_USAGE(
+ "on_hotplug=<When new device becomes available, recheck streams?> "
+ "on_rescue=<When device becomes unavailable, recheck streams?>");
+
+static const char* const valid_modargs[] = {
+ "on_hotplug",
+ "on_rescue",
+ NULL
+};
+
+struct userdata {
+ pa_core *core;
+ pa_module *module;
+ pa_hook_slot
+ *sink_input_new_hook_slot,
+ *source_output_new_hook_slot,
+ *sink_put_hook_slot,
+ *source_put_hook_slot,
+ *sink_unlink_hook_slot,
+ *source_unlink_hook_slot;
+
+ pa_bool_t on_hotplug:1;
+ pa_bool_t on_rescue:1;
+};
+
+static pa_bool_t role_match(pa_proplist *proplist, const char *role) {
+ const char *ir;
+ char *r;
+ const char *state;
+
+ if (!(ir = pa_proplist_gets(proplist, PA_PROP_DEVICE_INTENDED_ROLES)))
+ return FALSE;
+
+ while ((r = pa_split_spaces(ir, &state))) {
+
+ if (pa_streq(role, r)) {
+ pa_xfree(r);
+ return TRUE;
+ }
+
+ pa_xfree(r);
+ }
+
+ return FALSE;
+}
+
+static pa_hook_result_t sink_input_new_hook_callback(pa_core *c, pa_sink_input_new_data *new_data, struct userdata *u) {
+ const char *role;
+ pa_sink *s, *def;
+ uint32_t idx;
+
+ pa_assert(c);
+ pa_assert(new_data);
+ pa_assert(u);
+
+ if (!new_data->proplist) {
+ pa_log_debug("New stream lacks property data.");
+ return PA_HOOK_OK;
+ }
+
+ if (new_data->sink) {
+ pa_log_debug("Not setting device for stream %s, because already set.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
+ return PA_HOOK_OK;
+ }
+
+ if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE))) {
+ pa_log_debug("Not setting device for stream %s, because it lacks role.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
+ return PA_HOOK_OK;
+ }
+
+ /* Prefer the default sink over any other sink, just in case... */
+ if ((def = pa_namereg_get_default_sink(c)))
+ if (role_match(def->proplist, role)) {
+ new_data->sink = def;
+ new_data->save_sink = FALSE;
+ return PA_HOOK_OK;
+ }
+
+ PA_IDXSET_FOREACH(s, c->sinks, idx) {
+ if (s == def)
+ continue;
+
+ if (role_match(s->proplist, role)) {
+ new_data->sink = s;
+ new_data->save_sink = FALSE;
+ return PA_HOOK_OK;
+ }
+ }
+
+ return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_new_hook_callback(pa_core *c, pa_source_output_new_data *new_data, struct userdata *u) {
+ const char *role;
+ pa_source *s, *def;
+ uint32_t idx;
+
+ pa_assert(c);
+ pa_assert(new_data);
+ pa_assert(u);
+
+ if (!new_data->proplist) {
+ pa_log_debug("New stream lacks property data.");
+ return PA_HOOK_OK;
+ }
+
+ if (new_data->source) {
+ pa_log_debug("Not setting device for stream %s, because already set.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
+ return PA_HOOK_OK;
+ }
+
+ if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE))) {
+ pa_log_debug("Not setting device for stream %s, because it lacks role.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
+ return PA_HOOK_OK;
+ }
+
+ /* Prefer the default source over any other source, just in case... */
+ if ((def = pa_namereg_get_default_source(c)))
+ if (role_match(def->proplist, role)) {
+ new_data->source = def;
+ new_data->save_source = FALSE;
+ return PA_HOOK_OK;
+ }
+
+ PA_IDXSET_FOREACH(s, c->sources, idx) {
+ if (s == def)
+ continue;
+
+ if (role_match(s->proplist, role)) {
+ new_data->source = s;
+ new_data->save_source = FALSE;
+ return PA_HOOK_OK;
+ }
+ }
+
+ return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_put_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) {
+ pa_sink_input *si;
+ uint32_t idx;
+
+ pa_assert(c);
+ pa_assert(sink);
+ pa_assert(u);
+ pa_assert(u->on_hotplug);
+
+ PA_IDXSET_FOREACH(si, c->sink_inputs, idx) {
+ const char *role;
+
+ if (si->sink == sink)
+ continue;
+
+ if (si->save_sink)
+ continue;
+
+ if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE)))
+ continue;
+
+ if (role_match(si->sink->proplist, role))
+ continue;
+
+ if (!role_match(sink->proplist, role))
+ continue;
+
+ pa_sink_input_move_to(si, sink, FALSE);
+ }
+
+ return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_put_hook_callback(pa_core *c, pa_source *source, struct userdata *u) {
+ pa_source_output *so;
+ uint32_t idx;
+
+ pa_assert(c);
+ pa_assert(source);
+ pa_assert(u);
+ pa_assert(u->on_hotplug);
+
+ PA_IDXSET_FOREACH(so, c->source_outputs, idx) {
+ const char *role;
+
+ if (so->source == source)
+ continue;
+
+ if (so->save_source)
+ continue;
+
+ if (so->direct_on_input)
+ continue;
+
+ if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE)))
+ continue;
+
+ if (role_match(so->source->proplist, role))
+ continue;
+
+ if (!role_match(source->proplist, role))
+ continue;
+
+ pa_source_output_move_to(so, source, FALSE);
+ }
+
+ return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_unlink_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) {
+ pa_sink_input *si;
+ uint32_t idx;
+ pa_sink *def;
+
+ pa_assert(c);
+ pa_assert(sink);
+ pa_assert(u);
+ pa_assert(u->on_rescue);
+
+ /* There's no point in doing anything if the core is shut down anyway */
+ if (c->state == PA_CORE_SHUTDOWN)
+ return PA_HOOK_OK;
+
+ /* If there not default sink, then there is no sink at all */
+ if (!(def = pa_namereg_get_default_sink(c)))
+ return PA_HOOK_OK;
+
+ PA_IDXSET_FOREACH(si, sink->inputs, idx) {
+ const char *role;
+ uint32_t jdx;
+ pa_sink *d;
+
+ if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE)))
+ continue;
+
+ /* Would the default sink fit? If so, let's use it */
+ if (def != sink && role_match(def->proplist, role)) {
+ pa_sink_input_move_to(si, def, FALSE);
+ continue;
+ }
+
+ /* Try to find some other fitting sink */
+ PA_IDXSET_FOREACH(d, c->sinks, jdx) {
+ if (d == def || d == sink)
+ continue;
+
+ if (role_match(d->proplist, role)) {
+ pa_sink_input_move_to(si, d, FALSE);
+ break;
+ }
+ }
+ }
+
+ return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_unlink_hook_callback(pa_core *c, pa_source *source, struct userdata *u) {
+ pa_source_output *so;
+ uint32_t idx;
+ pa_source *def;
+
+ pa_assert(c);
+ pa_assert(source);
+ pa_assert(u);
+ pa_assert(u->on_rescue);
+
+ /* There's no point in doing anything if the core is shut down anyway */
+ if (c->state == PA_CORE_SHUTDOWN)
+ return PA_HOOK_OK;
+
+ /* If there not default source, then there is no source at all */
+ if (!(def = pa_namereg_get_default_source(c)))
+ return PA_HOOK_OK;
+
+ PA_IDXSET_FOREACH(so, source->outputs, idx) {
+ const char *role;
+ uint32_t jdx;
+ pa_source *d;
+
+ if (so->direct_on_input)
+ continue;
+
+ if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE)))
+ continue;
+
+ /* Would the default source fit? If so, let's use it */
+ if (def != source && role_match(def->proplist, role) && !source->monitor_of == !def->monitor_of) {
+ pa_source_output_move_to(so, def, FALSE);
+ continue;
+ }
+
+ /* Try to find some other fitting source */
+ PA_IDXSET_FOREACH(d, c->sources, jdx) {
+ if (d == def || d == source)
+ continue;
+
+ if (role_match(d->proplist, role) && !source->monitor_of == !d->monitor_of) {
+ pa_source_output_move_to(so, d, FALSE);
+ break;
+ }
+ }
+ }
+
+ return PA_HOOK_OK;
+}
+
+int pa__init(pa_module*m) {
+ pa_modargs *ma = NULL;
+ struct userdata *u;
+ pa_bool_t on_hotplug = TRUE, on_rescue = TRUE;
+
+ pa_assert(m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("Failed to parse module arguments");
+ goto fail;
+ }
+
+ if (pa_modargs_get_value_boolean(ma, "on_hotplug", &on_hotplug) < 0 ||
+ pa_modargs_get_value_boolean(ma, "on_rescue", &on_rescue) < 0) {
+ pa_log("on_hotplug= and on_rescue= expect boolean arguments");
+ goto fail;
+ }
+
+ m->userdata = u = pa_xnew0(struct userdata, 1);
+ u->core = m->core;
+ u->module = m;
+ u->on_hotplug = on_hotplug;
+ u->on_rescue = on_rescue;
+
+ /* A little bit later than module-stream-restore */
+ u->sink_input_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_NEW], PA_HOOK_EARLY+10, (pa_hook_cb_t) sink_input_new_hook_callback, u);
+ u->source_output_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], PA_HOOK_EARLY+10, (pa_hook_cb_t) source_output_new_hook_callback, u);
+
+ if (on_hotplug) {
+ /* A little bit later than module-stream-restore */
+ u->sink_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE+10, (pa_hook_cb_t) sink_put_hook_callback, u);
+ u->source_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_LATE+10, (pa_hook_cb_t) source_put_hook_callback, u);
+ }
+
+ if (on_rescue) {
+ /* A little bit later than module-stream-restore, a little bit earlier than module-rescue-streams, ... */
+ u->sink_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], PA_HOOK_LATE+10, (pa_hook_cb_t) sink_unlink_hook_callback, NULL);
+ u->source_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], PA_HOOK_LATE+10, (pa_hook_cb_t) source_unlink_hook_callback, NULL);
+ }
+
+ pa_modargs_free(ma);
+ return 0;
+
+fail:
+ pa__done(m);
+
+ if (ma)
+ pa_modargs_free(ma);
+
+ return -1;
+}
+
+void pa__done(pa_module*m) {
+ struct userdata* u;
+
+ pa_assert(m);
+
+ if (!(u = m->userdata))
+ return;
+
+ if (u->sink_input_new_hook_slot)
+ pa_hook_slot_free(u->sink_input_new_hook_slot);
+ if (u->source_output_new_hook_slot)
+ pa_hook_slot_free(u->source_output_new_hook_slot);
+
+ if (u->sink_put_hook_slot)
+ pa_hook_slot_free(u->sink_put_hook_slot);
+ if (u->source_put_hook_slot)
+ pa_hook_slot_free(u->source_put_hook_slot);
+
+ if (u->sink_unlink_hook_slot)
+ pa_hook_slot_free(u->sink_unlink_hook_slot);
+ if (u->source_unlink_hook_slot)
+ pa_hook_slot_free(u->source_unlink_hook_slot);
+
+ pa_xfree(u);
+}